<template>
  <!-- 主体部分 -->
  <section class="main">
    <!-- 全选反选按钮 -->
    <input  id="toggle-all" class="toggle-all" type="checkbox" v-model="all"/>
    <label for="toggle-all">Mark all as complete</label>
    <ul class="todo-list">
      <!-- 当任务已完成，可以给 li 加上 completed 类，会让元素加上删除线 -->
      <li v-for='item in list' :key='item.id' :class='{completed:item.done}'>
        <div class="view">
          <!-- 默认选中:checked -->
          <input @change="$emit('change-status',item.id)" class="toggle" :checked='item.done' type="checkbox"/>
          <label>{{item.name}}</label>
          <button class="destroy" @click="$emit('delete-event',item.id)"></button>
        </div>
      </li>
    </ul>
  </section>
</template>

<script>
export default {
  props:{
    list:{
      type:[Array],
    required:true,
    }
  },
  computed:{
    all:{
      get(){

        return this.list.every(item=>item.done===true)
      },
      set(value){
this.$emit('change-all-event',value)
      }
    }
  }
}
</script>

<style></style>
